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High-speed op amps (GBW ≥ 50 MHz)

THS4031

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100-MHz, single-channel low-noise voltage-feedback amplifier

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OPA891 ACTIVE 180MHz 0.95nV/√Hz operational amplifier with ultra-low total harmonic distortion (THD) Lower noise (0.95 nV/Hz), lower Iq (7.5 mA), higher precision (1 mV), and improved THD+N (-137 dBc)

THS4031

ACTIVE
Data sheet Order now

Product details

Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 9 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 32 GBW (typ) (MHz) 120 BW at Acl (MHz) 100 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 100 Vn at flatband (typ) (nV√Hz) 1.2 Vn at 1 kHz (typ) (nV√Hz) 1.4 Iq per channel (typ) (mA) 7.5 Vos (offset voltage at 25°C) (max) (mV) 2 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 95 Input bias current (max) (pA) 20000000 Offset drift (typ) (µV/°C) 2 Iout (typ) (mA) 200 2nd harmonic (dBc) 96 3rd harmonic (dBc) 98 Frequency of harmonic distortion measurement (MHz) 1
Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 9 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 32 GBW (typ) (MHz) 120 BW at Acl (MHz) 100 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 100 Vn at flatband (typ) (nV√Hz) 1.2 Vn at 1 kHz (typ) (nV√Hz) 1.4 Iq per channel (typ) (mA) 7.5 Vos (offset voltage at 25°C) (max) (mV) 2 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 95 Input bias current (max) (pA) 20000000 Offset drift (typ) (µV/°C) 2 Iout (typ) (mA) 200 2nd harmonic (dBc) 96 3rd harmonic (dBc) 98 Frequency of harmonic distortion measurement (MHz) 1
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) HVSSOP (DGN) 8 14.7 mm² (3 mm × 4.9 mm)
  • Ultra-low 1.2nV/√Hz voltage noise
  • High speed:
    • 100MHz bandwidth [G = 2 (–1), –3dB]
    • 100V/µs slew rate
  • Very low distortion
    • THD = –81dBc (f = 1MHz, RL = 150Ω)
    • THD = –96dBc (f = 1MHz, RL = 1kΩ)
  • Low 0.3mV (typical) input offset voltage
  • 200mA output current drive (typical)
  • Typical operation from ±4.5V to ±16V
  • Offset nulling pins on the THS4031
  • Ultra-low 1.2nV/√Hz voltage noise
  • High speed:
    • 100MHz bandwidth [G = 2 (–1), –3dB]
    • 100V/µs slew rate
  • Very low distortion
    • THD = –81dBc (f = 1MHz, RL = 150Ω)
    • THD = –96dBc (f = 1MHz, RL = 1kΩ)
  • Low 0.3mV (typical) input offset voltage
  • 200mA output current drive (typical)
  • Typical operation from ±4.5V to ±16V
  • Offset nulling pins on the THS4031

The THS4031 and THS4032 (THS403x) are ultra-low voltage noise, high-speed voltage feedback amplifiers that are an excellent choice for applications requiring low voltage noise, including communications and imaging. The single-amplifier THS4031 and the dual-amplifier THS4032 offer very good ac performance with 100MHz bandwidth (G = 2), 100V/µs slew rate, and 70ns settling time (0.1%). The THS403x are unity-gain stable with 120MHz bandwidth. These amplifiers have a high drive capability of 200mA and draw only 7.5mA supply current per channel. With –96dBc of total harmonic distortion (THD) at f = 1MHz and a very low noise of 1.2nV/√Hz, the THS403x are designed for applications requiring low distortion and low noise such as buffering analog-to-digital converters.

The THS4031 and THS4032 (THS403x) are ultra-low voltage noise, high-speed voltage feedback amplifiers that are an excellent choice for applications requiring low voltage noise, including communications and imaging. The single-amplifier THS4031 and the dual-amplifier THS4032 offer very good ac performance with 100MHz bandwidth (G = 2), 100V/µs slew rate, and 70ns settling time (0.1%). The THS403x are unity-gain stable with 120MHz bandwidth. These amplifiers have a high drive capability of 200mA and draw only 7.5mA supply current per channel. With –96dBc of total harmonic distortion (THD) at f = 1MHz and a very low noise of 1.2nV/√Hz, the THS403x are designed for applications requiring low distortion and low noise such as buffering analog-to-digital converters.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet THS403x 100MHz, Low-Noise, High-Speed Amplifiers datasheet (Rev. L) PDF | HTML Jul 12, 2024
E-book The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML Mar 28, 2017
Analog design Journal Accurately measuring ADC driving-circuit settling time (Rev. A) May 18, 2015
Application note Wideband Complementary Current Output DAC Single-Ended Interface (Rev. A) May 8, 2015
Application note Low Power Input and Reference Driver Circuit for ADS8318 and ADS8319 Jun 24, 2009
More literature THS4031M/5962-9959501QxA 120-MHz Low-Noise, High-Speed Amplifier May 18, 2000
User guide THS4031 High-Speed Operational Amplifier EVM User's Guide Jun 24, 1999

Design & development

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Evaluation board

THS4031EVM — THS4031 evaluation module for 100-MHz, single-channel low-noise voltage-feedback amplifier

The THS4031 high-speed operational amplifier evaluation module (EVM) is a complete high-speed amplifier circuit. It consists of the THS4031 high-speed, low-power operational amplifier IC, along with a small number of passive parts, mounted on a small circuit board measuring approximately 1.7 inch (...)

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Simulation model

THS4031 PSpice Model (Rev. A)

SLOJ005 (2 KB) - PSpice model
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SOIC (D) 8 Ultra Librarian
HVSSOP (DGN) 8 Ultra Librarian
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